Fill the gaps with who which​

1 Are the cooks in the kitchen?
Yes, they are. No , they are not.
2 Are the waiters in the dining hall?
Yes, they are. No ,they are not.
3 Are the tables set for dinner?
Yes, they are. No ,they are not.
4 Is the watermelon juicy?
Yes, it is. No it is not
5 Is the menu card on the table?
Yes , it is. No it is not.
6 Is he a good waiter?
Yes, he is. No he is not.
7 Are cigarettes on sale?
Yes, they are. No they are not.
8 Are there any flowers on the table?
Yes, there are. No there aren't.
B)
1 Is the dining hall small?
No, it is not.
2 Are the waiters in the dining hall now?
No , they are not.
3 Are the tablecloths on the tables now?
No , they are not.
4 Are menu cards on the table now?
No , they are not.
5 Is steak on the menu today?
No , it is not.
6 Is Mary a headwater ?
No, she is not.
7 Are cigarettes on sale?
No , they are not.
8 Are there any flowers on the table?
No , there are not.

1. Was my father a worker many years ago?
Yes, he was.
2. Is he an engineer now?
No, he isn't.
3. Are these children little?
Yes, they are.
4. Shall we be economists in some years?
Yes, we shall.
5. Is your daughter very nice?
Yes, she is.
6. Are they good boys?
Yes, they are.
7. Am I a first year student?
No, I am not.
8. Is our mother a teacher of English?
No, she isn't.
9. Were we at home in the evening?
Yes, we were.
10. Are you my best friend?
Yes, you are.
11. Will it be warm tomorrow?
No, it won't.
12. Was Het (если это имя, а не отпечатка) present at the conference yesterday?
Yes, he was.
13. Will these boys be good sportsmen?
Yes, they will.
14. Shall I be an engineer soon?
Yes, I shall.